Hate to rehash an old topic but I didn't see the need to create a new one when this one addresses the same.
Colour-blindness has come up again for myself and has made these games much harder than it would be for a normal sighted person.
The 2nd nano Heist I had issues with the sudoku/paint puzzle. The same styled puzzle I had issues with during the first iOS app heist.
This morning I had issues right off with the start of the Heist 2. I had thought I would seeing far enough ahead at the start of Heist 1 by seeing the "Simon Says" style door.
My wife and I started the Heist this morning and I did not see any of the colour shifting that happened with the film at the start. So I spent a stupid amount of time trying to find some reference to what the pattern would be.
My wife saw my frustration and helped out by telling me the answer. Even with her telling me when the shifts happened, I did not see them.
And going back to the sudoku/paint puzzle it came up again during this Heist. I didn't say anything about it during the nano 2 because I had hoped it was a one off puzzle.
Again I had to wait for my wife to assist me in a fairly logical puzzle.
I don't know what the answer as I am sure all the puzzles for this Heist have been written and I expect to come across more colour based puzzles.
During the next three years while you work on MacHeist 5 try and find some logic puzzles that do not rely on colour.